Display screen or a portion thereof with graphical user interface



The FIGURE is a front view of a display screen or portion thereof with graphical user interface showing my new design.

The broken line drawing of the portion of the display screen and the text/words, symbols and images in broken lines shown in FIG. 1 are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with graphical user interface, as shown and described. 